missing (adj.) Look up missing at Dictionary.com
"not present, absent," 1520s, from present participle of miss (v.). Military sense of "not present after a battle but not known to have been killed or captured" is from 1845. Missing link first attested 1851 in Lyell. Missing person is from 1876.
mission (n.) Look up mission at Dictionary.com
1590s, "a sending abroad," originally of Jesuits, from Latin missionem (nominative missio) "act of sending, a dispatching; a release, a setting at liberty; discharge from service, dismissal," noun of action from past participle stem of mittere "to release, let go; send, throw," which de Vaan traces to a PIE *m(e)ith- "to exchange, remove," also source of Sanskrit methete, mimetha "to become hostile, quarrel," Gothic in-maidjan "to change;" he writes, "From original 'exchange', the meaning developed to 'give, bestow' ... and 'let go, send'."

Diplomatic sense of "body of persons sent to a foreign land on commercial or political business" is from 1620s. In American English, sometimes "an embassy" (1805). Meaning "dispatch of an aircraft on a military operation" (1929, American English) later extended to spacecraft flights (1962), hence, mission control (1964). As a style of furniture, said to be imitative of furniture in the buildings of original Spanish missions to North America, it is attested from 1900.
missionary (adj.) Look up missionary at Dictionary.com
"sent on a mission," 1640s, from Modern Latin missionarius "pertaining to a mission," from Latin missionem (see mission).
missionary (n.) Look up missionary at Dictionary.com
1650s, from missionary (adj.). Missionary position attested by 1963, said to have been coined by Kinsey (1948), who identified its origin in work done by Polish anthropologist Bronisław Malinowski in Melanesia in the 1920s; allegedly from the term used by South Pacific peoples to describe what Christian missionaries promoted to replace their local variations. By late 1960s it became the general term for this type of sex, formerly also known as the English-American position.
Mississippi Look up Mississippi at Dictionary.com
originally as the name of the river, from French, from Algonquian (French missionaries first penetrated the river valley in its upper reaches), literally "big river;" compare Ojibwa mshi- "big," ziibi "river." Organized as a U.S. territory 1798; admitted as a state 1817. Related: Mississippian.
missive (n.) Look up missive at Dictionary.com
mid-15c., "commandment," noun use of adjective (mid-15c.) meaning "sent by superior authority," from Medieval Latin missivus "for sending, sent," especially in littera missiva "letters sent," from Latin missus, past participle of mittere "to send" (see mission).
Missouri Look up Missouri at Dictionary.com
originally a name for a group of native peoples among Chiwere (Siouan) tribes, from an Algonquian word recorded c. 1700, literally "people of the big canoes." The expression I'm from Missouri, you'll have to show me is attested from at least c. 1880. Related: Missourian.
misspeak (v.) Look up misspeak at Dictionary.com
late 14c., "to say amiss," also "to speak insultingly," from mis- (1) + speak (v.). Related: Misspeaking; misspoken. Old English missprecan meant "to grumble, murmur."
misspell (v.) Look up misspell at Dictionary.com
1650s, from mis- (1) + spell (v.1). Related: Misspelled; misspelling.
misspend (v.) Look up misspend at Dictionary.com
also mis-spend, "to spend amiss or wastefully," late 14c.; see mis- (1) + spend. Related: Misspent, frequently coupled with youth; misspending.
misstate (v.) Look up misstate at Dictionary.com
also mis-state, 1640s, from mis- (1) + state (v.). Related: Misstated; misstating.
misstatement (n.) Look up misstatement at Dictionary.com
1790, from misstate + -ment.
misstep (v.) Look up misstep at Dictionary.com
also mis-step, c. 1300; see mis- (1) + step (v.). The noun in the figurative sense of "faux pas" is first recorded c. 1800; literal sense is from 1837.
missus (n.) Look up missus at Dictionary.com
corruption of mistress; as oral form of Mrs., from 1790; the missus "the wife" attested by 1833.
missy (n.) Look up missy at Dictionary.com
"young girl," 1670s, playful form of miss (n.2), chiefly among servants at first.
mist (v.) Look up mist at Dictionary.com
Old English mistian "to become misty, to be or grow misty;" see mist (n.). Meaning "To cover with mist" is early 15c. Related: Misted; misting.
mist (n.) Look up mist at Dictionary.com
Old English mist "dimness (of eyesight), mist" (earliest in compounds, such as misthleoðu "misty cliffs," wælmist "mist of death"), from Proto-Germanic *mikhstaz (source also of Middle Low German mist, Dutch mist, Icelandic mistur, Norwegian and Swedish mist), perhaps from PIE *meigh- "to urinate" (source also of Greek omikhle, Old Church Slavonic migla, Sanskrit mih, megha "cloud, mist;" see micturition).
Sometimes distinguished from fog, either as being less opaque or as consisting of drops large enough to have a perceptible downward motion. [OED]
Also in Old English in sense of "dimness of the eyes, either by illness or tears," and in figurative sense of "things that obscure mental vision."
mistake (v.) Look up mistake at Dictionary.com
early 14c., "to commit an offense;" late 14c., "to misunderstand, misinterpret," from a Scandinavian source such as Old Norse mistaka "take in error, miscarry," from mis- "wrongly" (see mis- (1)) + taka "take" (see take (v.)). Related: Mistook; mistaking.
mistake (n.) Look up mistake at Dictionary.com
1630s, from mistake (v.).
An error is a wandering from truth, primarily in impression, judgment, or calculation and, by extension of the idea, in conduct; it may be a state. A mistake is a false judgment or choice; it does not, as error sometimes does, imply moral obliquity, the defect being placed wholly in the wisdom of the actor, and in its treatment of this defect the word is altogether gentle. [Century Dictionary, 1897]
Meaning "unintended pregnancy" is from 1957.
mistaken (adj.) Look up mistaken at Dictionary.com
c. 1600, "under misapprehension," past participle adjective from mistake (v.). Related: Mistakenly. Mistaken identity attested from 1865.
Mister Look up Mister at Dictionary.com
as a title of courtesy before a man's Christian name, mid-15c., unaccented variant of master (n.). As a form of address, without a name and with a tinge of rudeness, from 1760.
misthink (v.) Look up misthink at Dictionary.com
Old English misðyncan "to be mistaken;" see mis- (1) + think (v.). From early 13c. as "to have sinful thoughts;" from 1590s as "to think ill of."
mistime (v.) Look up mistime at Dictionary.com
late Old English mistimian "to happen amiss" (of an event); see mis- (1) + time (v.). Meaning "not to time properly" is first recorded late 14c. Related: Mistimed; mistiming.
mistletoe (n.) Look up mistletoe at Dictionary.com
Old English mistiltan, from mistel "mistletoe" (see missel) + tan "twig." Similar formation in Old Norse mistilteinn, Norwegian misteltein, Danish mistelten. The second element is cognate with Old Saxon and Old Frisian ten, Old Norse teinn, Dutch teen, Old High German zein, Gothic tains "twig." Venerated by the Druids; the custom of hanging it at Christmas and kissing under it is mentioned by Washington Irving.
mistral (n.) Look up mistral at Dictionary.com
"cold northerly wind on the Mediterranean coast of France," c. 1600, from French, from Provençal mistral, literally "the dominant wind," from mistral (adj.) "dominant," from Latin magistralis "dominant," from magister "master" (see master (n.)).
mistranslate (v.) Look up mistranslate at Dictionary.com
1530s, from mis- (1) + translate. Related: Mistranslated; mistranslating.
mistranslation (n.) Look up mistranslation at Dictionary.com
1690s, from mis- (1) + translation.
mistreat (v.) Look up mistreat at Dictionary.com
mid-15c.; see mis- (1) + treat (v.). Related: Mistreated; mistreating.
mistreatment (n.) Look up mistreatment at Dictionary.com
1716, from mistreat + -ment.
mistress (n.) Look up mistress at Dictionary.com
early 14c., "female teacher, governess," from Old French maistresse "mistress (lover); housekeeper; governess, female teacher" (Modern French maîtresse), fem. of maistre "master" (see master (n.)). Sense of "a woman who employs others or has authority over servants" is from early 15c. Sense of "kept woman of a married man" is from early 15c.
mistrial (n.) Look up mistrial at Dictionary.com
1620s; see mis- (1) + trial (n.).
mistrust (v.) Look up mistrust at Dictionary.com
late 14c., from mis- (1) + trust (v.). Related: Mistrusted; mistrusting.
mistrust (n.) Look up mistrust at Dictionary.com
late 14c.; see mis- (1) + trust (n.).
misty (adj.) Look up misty at Dictionary.com
Old English mistig; see mist (n.) + -y (2). Related: Mistily; mistiness.
misunderstand (v.) Look up misunderstand at Dictionary.com
c. 1200; see mis- (1) + understand. Related: Misunderstood; misunderstanding.
misunderstanding (n.) Look up misunderstanding at Dictionary.com
"want of understanding," mid-15c., from present participle of misunderstand.
When misunderstanding serves others as an advantage, one is helpless to make oneself understood. [Lionel Trilling]
Meaning "dissention, disagreement" is first recorded 1640s.
misunderstood (adj.) Look up misunderstood at Dictionary.com
1590s, past participle adjective from misunderstand.
misuse (n.) Look up misuse at Dictionary.com
late 14c., from mis- (1) + use (n.). It aligns with the older sense of the verb misuse.
misuse (v.) Look up misuse at Dictionary.com
late 14c., "to use improperly;" see mis- (1) + use (v.). Meaning "to subject to ill-treatment" is attested from 1530s. Related: Misused; misusing.
MIT Look up MIT at Dictionary.com
originally M.I.T., abbreviation of Massachusetts Institute of Technology, attested from 1892.
mite (n.2) Look up mite at Dictionary.com
"little bit," mid-14c., from Middle Dutch or Middle Low German mite "tiny animal," from Proto-Germanic *miton-, from PIE root *mei- (2) "small," and thus probably identical with mite (n.1). Also the name of a medieval Flemish copper coin of very small value, proverbial in English for "a very small unit of money," hence used since Wyclif to translate Latin minutum from Vulgate in Mark xii.43, itself a translation of Greek lepton. French mite (14c.) is a loan-word from Dutch.
mite (n.1) Look up mite at Dictionary.com
"tiny animal, minute arachnid," Old English mite, from Proto-Germanic *miton (source also of Middle Dutch mite, Dutch mijt, Old High German miza, Danish mide) originally meaning perhaps "the cutter," in reference to its bite, from Proto-Germanic *mait- (source also of Gothic maitan, Old High German meizen "to cut"), from PIE root *mai- (1) "to cut" (see maim). Or else its original sense is "something small," and it is from PIE root *mei- (2) "small," in reference to size.
miter (n.2) Look up miter at Dictionary.com
in the carpentry sense of "joint at a 45 degree angle," 1670s, perhaps from mitre, via notion of joining of the two peaks of the folded cap. As a verb from 1731.
miter (n.1) Look up miter at Dictionary.com
alternative spelling of mitre (see -re).
Mithras Look up Mithras at Dictionary.com
Persian god of light, 1550s, from Latin, from Greek Mithras, from Avestan Mithra-, from Indo-Iranian *mitram "contract," whence *mitras "contractual partner, friend," conceptualized as a god, or, according to Kent, first the epithet of a divinity and eventually his name. Perhaps from PIE root *mei- (1) "to change; exchange," on the notion of "god of the contract" [Watkins]. Related to Sanskrit Mitrah, a Vedic deity associated with Varuna. "His name is one of the earliest Indic words we possess, being found in clay tablets from Anatolia dating to about 1500 B.C." [Calvert Watkins, "Dictionary of Indo-European Roots," 2000]. Related: Mithraic; Mithraism.
mithridate (n.) Look up mithridate at Dictionary.com
"antidote against poison," from Medieval Latin mithridatum, from Late Latin mithridatium, neuter of Mithridatius "pertaining to Mithridates," king of Pontus, who made himself poison-proof.
mithril (n.) Look up mithril at Dictionary.com
1954, an invented word by English author J.R.R. Tolkien (1892-1973).
mitigant (adj.) Look up mitigant at Dictionary.com
1540s, from Latin mitigantem, present participle of mitigare (see mitigate). As a noun from 1865.
mitigate (v.) Look up mitigate at Dictionary.com
early 15c., "relieve (pain)," from Latin mitigatus, past participle of mitigare "soften, make tender, ripen, mellow, tame," figuratively, "make mild or gentle, pacify, soothe," ultimately from mitis "gentle, soft" + root of agere "to do, perform" (from PIE root *ag- "to drive, draw out or forth, move"). For mitis de Vaan suggests cognates in Sanskrit mayas- "refreshment, enjoyment," Lithuanian mielas "nice, sweet, dear," Welsh mwydion "soft parts," Old Irish min "soft," from a PIE *mehiti- "soft." Related: Mitigated; mitigating; mitigates.
mitigating (adj,.) Look up mitigating at Dictionary.com
"extenuating," 1610s, present participle adjective from mitigate.